Composition of matter



Patented Sept. 16,- 1930 UNITED STATES PATENT. OFFICE} manna: H. now am:Joana. onmm or 'mnmmn, 'MIGHIGAN, assionons we ran now cnmucan comm,- ormm m, mcnrqsn, A conrona'rron or men:-

GAIN

physical character making possible: adaptafl tion to various industrial'usa'ges' maybe 10 had; and it is amongcthe objects'ofthe-lpreseentinvention to provide compositions" having qualities along the desiredlines; 1 Other objects and advantages will appearjasfthe descriptionproceeds. 1 1

To the accomplishment of .the jforegoingand related? ends,- theinventio'mithenf, consists of the features hereinafter fully. described,and-partieularly pointed out in the claims, the following descriptionsetting forth in detail but a iew of thejvariousl ways in which theprinciple of thefinvent onmay be employed. y Inaccordance witho'urinvention,-- an aryl compound of'stable' molecular structureand oneor more modifying substances arej-pro vided in-physical combination. anillus trative example: A composition made-up of v. p

v p 7 7 "er-ties are .well. adapted for such purposes; v v chloride,GClhas a highwdielectricstrength,

30' large coeflicient of'expansiomand a;solidifi+ cat on point off- 5C." or u ward depending trachloride'.

dipheuyl oxide, I C12 1bQ18nd= carbon' -tetraupon the proportion of carn te For instance, proportions of -95% of .di-

phenylv oxide and 530% of carbon tetra-' s5 chloride may. be em loyed.A, composition of diphenyl oxidb and 20% carbon tetrachloride has aninitial boiling point of'115 (3., and in exposure to low temperaturesits fluidity persists overa feasible and practica- 40 ble range, themelting point or temperature of first crystal formation being about 15(3.,"

and the final freezing temperature or point of solidification beingabout 2 C. This.

I advantage is secured by the compound charactor of the material, thestarting of crystal .stable a'gainst deof carbon tetrachloride.

' nyl oxide 60% and naphthylmethyl ether nyl oxide alone, and'arecsuitable'intrans 'formers, immersion switches, etc., and byoolmosrrionlonmrrnn I .lpplieationiiled'jleeeinber 13, 1926. Serial No.154,648.

formation in one componentof the mixture occasioning an increasingconcentration of the remainder, and the finalpoint of solidification ofthe residue thus occurring below a progressing range of slusht'formationrather thanas an abrupt setting whichwould notallow of any readjustmentofstresses in the mass and its container. The dielectric strength ofsuch acompositionv sabo ut-300,- 000' volts per centimeter beforebreakdown. Other chlor-compounds may be u'sed in lieu depending upon theparticular usage in view. '7

As another instance zfiDiphenyl'oxide and I naphthyl methyl ether, C HO, e.g. diphe- 40% may be mentioned. This has a boiling point of about260 Oriand a melting point ofabout '5.5 C. and a dielectric stren th ofabout 300,000 volts per: centimeter fore breakdown.

Such compositions have a siibstantial electric character coupledwitha'practica'bly low melting point, lower than that of diphe-- reasorioftheir excellentheat transfer propadditionally j they are well adaptedfor heat "transfer usegenelfally in power plants,' etjc'..'j7,=

We therefore: particularly point outf and distinctly claim asour'invention:

LA 'eomposit'o'n of matter, which corn prises diphenyl oxide and asmaller amount for lowering the melting point.

' 2..A composition of matter, which c riprises diphenyl oxide and asmaller amount of an organic (-hlor-cmupound, said compo- 00" t as I ofan organic compoundcmiscible therewith .7

sition having a dielectric strength of not less than 50,000 volts percentimeter.

3. A composition of matter, which comprises diphenyl oxide and a smalleramount of carbon tetrachloride.

4. A composition of matter, which consists of from to 95 per centdiphenyl oxide and 5 to 30 per cent of carbon tetrachloride.

5. A composition of matter, which comprises diphenyl oxide about andcarbon tetrachloride about 20%.

Signed by us this 3rd day of December,

HERBERT H. DOW. JOHN J. GREBE.

